Skylake Intel HD graphics
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I recently installed the latest version of debian on my Asus laptop
with corei7 skylake CPU. But unfortunately I can't change screen
brightness which is really annoying.
The graphics chipset is apparently "Intel HD Graphics 520". I
installed linux-firmware-nonfree, xserver-xorg-video-intel and some
other related packages and even a skylake driver directly downloaded
from intel ... but nothing. Still can't change the brightness and the
'/sys/class/backlight' directory is empty. It seems that the OS
doesn't recognize the graphics chipsets. My laptop has also an NVIDIA
graphics card as well, but installing nvidia driver disabled the
Xserver to start so I removed xorg.conf to be able to login to the
system again.
This is the output of some commands to get more information about the
hardware:
lspci -nnk | grep -i vga -A 2
00:02.0 VGA compatible controller [0300]: Intel Corporation Device
[8086:1916] (rev 07)
Subsystem: ASUSTeK Computer Inc. Device [1043:1280]
00:04.0 Signal processing controller [1180]: Intel Corporation
Device [8086:1903] (rev 08)
lshw -c video
*-display UNCLAIMED
description: VGA compatible controller
product: Intel Corporation
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 07
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Sirus Shahini
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